Over at Wired, Frank Rose has compiled
an extensive article about the Year Zero ARG, which goes into a great amount of detail about how the game came to be, how it mutated as fans read too much into things. If you get a rush of excitement out of assembling highlighted letters, you're in luck, as they've got a couple of bonus features you can get to if you work for it. Or... something. I haven't taken the time out to figure it out myself just yet. There is also an unabridged interview with Trent Reznor
posted here. Definitely check this stuff out.